[105359] in North American Network Operators' Group
Wifi access problem: control session time and accounting accuracy
daemon@ATHENA.MIT.EDU (Joe Shen)
Thu Jun 19 11:41:48 2008
Date: Thu, 19 Jun 2008 23:37:54 +0800 (SGT)
From: Joe Shen <joe_hznm@yahoo.com.sg>
To: NANGO <nanog@merit.edu>
Reply-To: joe_hznm@yahoo.com.sg
Errors-To: nanog-bounces@nanog.org
hi,
we provide Wifi access to customers. =20
The basic system architecture is, customer get IP address using DHCP, but=
BAS limit customer access to special IP address block before customer log =
in. Customer log in at portal page, where policy server get username/passw=
ed and authenticate by sending radius packets to AAA server.=20
We use Redback NPM with SE800 and Juniper C2k with E1440. We met two pro=
blem :
1. Could we control customer session time according to radius authenticat=
ion echo message ( Session-timeout )?=20
it seems redback could not translate Session-timeout to its internal co=
ntrol policy.=20
2. How could we track customer status ?
we noticed some people leave hotspot without log out explicitly disconn=
ect. There leave a lot of open session record on radius server, because no =
Accouting-Off packet received.
Is there any mechanism we could use to detect cliet status in Wifi envi=
ronment ? ( e.g. PPPOE keepalive message )=20
thanks in advance .
Joe
=20
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